In the aftermath of the US presidential election, people are wearing safety pins as a symbol of solidarity with people of color, immigrants, LGBTQ people, religious minorities, and others facing targeted violence.

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The movement got it's start after the successful Brexit campaign in the UK, when many immigrants and refugees faced an uptick in racist attacks.

Allison, the American woman living in London who started it, told BuzzFeed News how the idea came to be.

“I thought about something that would cost nothing and had no political affiliation. Something that says, ‘I am a safe space, you can sit next to me, you can talk to me, you can ask me for a help,'” she said.

Now, thousands of people are wearing safety pins and sharing photos of it on social media.